TY - JOUR AU - O. A. Torshina TI - Differential operators on the projective plane JO - Journal of computational and engineering mathematics PY - 2015 SP - 84 EP - 94 VL - 2 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JCEM_2015_2_4_a8/ LA - en ID - JCEM_2015_2_4_a8 ER -